Henry WinklerAge: 67Occupation: Actor, Director, and ProducerKnown For: His iconic portrayal of Fonzie on the 1970s sitcom 'Happy Days,' producing television shows including 'MacGyver,' directing films such as 'Memories of Me,' and appearing in films such as 'Scream,' 'The Waterboy,' and 'Little Nicky'

John LithgowAge: 67Occupation: Actor and AuthorKnown For: Playing Dick Solomon on the NBC sitcom '3rd Rock from the Sun,' Oscar nominations for his roles in 'The World According to Garp' and 'Terms of Endearment,' winning a Tony Award for his performance in 'Sweet Smell of Success,' and writing several books of poetry and children's literature

Alan JacksonAge: 54Occupation: Singer, Songwriter, and MusicianKnown For: Blending honky tonk and mainstream country sounds, 35 number one country hits such as 'Don't Rock the Jukebox' and 'Chattahoochee,' winning two Grammy Awards, and being a member of the Grand Ole Opry

Suzanne SomersAge: 66Occupation: Actress, Author, and EntrepreneurKnown For: Her role as Chrissy Snow on 'Three's Company,' her series of best-selling self-help books, her many different product lines, and her wacky presentations on the Home Shopping Network

Olivia Newton-JohnAge: 64Occupation: Singer, Songwriter, and ActressKnown For: Winning four Grammy Awards for songs such as 'I Honestly Love You' and 'Physical,' starring in the smash movie musical 'Grease,' being a breast cancer survivor, and her work as an environmental and animal rights activist

Gloria GaynorAge: 63Occupation: SingerKnown For: Hits such as ‘Never Can Say Goodbye,’ ‘I Am What I Am,’ and the perennial favorite of drag queens the world over, ‘I Will Survive’

Chrissie HyndeAge: 61Occupation: Singer, Songwriter, and MusicianKnown For: Her trailblazing work as lead vocalist for the rock group The Pretenders, songs such as ‘Brass in Pocket,’ ‘My City Was Gone,’ and ‘Middle of the Road,’ and having children with Ray Davies of the Kinks and Jim Kerr of Simple Minds

Reba McEntireAge: 57Occupation: Singer, Songwriter and ActressKnown For: Being the best-selling female country artist of all time, releasing 26 albums and racking up 35 number one singles including ‘Whoever’s in New England,’ ‘Does He Love You’ and ‘Somebody,’ and starring on the sitcom ‘Reba’ and the upcoming ‘Malibu Country’

Ric OcasekAge: 63Occupation: Singer, Songwriter, Musician and ProducerKnown For: Fronting and being the principal songwriter for New Wave group The Cars, known for the songs ‘Just What I Needed,’ ‘My Best Friend’s Girl,’ ‘Shake It Up,’ ‘You Might Think’ and ‘Drive,’ producing albums for other artists like No Doubt, and his longtime marriage to supermodel Paulina Porizkova

William ShatnerAge: 81Occupation: ActorKnown For: Becoming a cultural icon for his portrayal of Capt. James T. Kirk on the sci-fi series ‘Star Trek’ and in many of its namesake movies, starring on the series ‘T. J. Hooker,’ ‘The Practice’ and ‘Boston Legal,’ various work as a musician, author, producer, director and celebrity pitchman, and his distinctive speaking style that. Makes him. Sound. Sort of like. This.

Matthew BroderickAge: 50Occupation: ActorKnown For: Playing the title character in the classic movie ‘Ferris Bueller’s Day Off,’ voicing Adult Simba in ‘The Lion King’ film franchise, portraying Leo Bloom in the Hollywood and Broadway productions of ‘The Producers,’ winning two Tony Awards, and his marriage to Sarah Jessica Parker

Spike LeeAge: 55Occupation: Director, Producer, Writer and ActorKnown For: Earning two Oscar nominations for helming controversial socio-political films like ‘Do the Right Thing,’ ‘Jungle Fever’ and ‘Malcolm X’ as well as documentaries including ‘When The Levees Broke: A Requiem in Four Acts’ and ’4 Little Girls,’ sometimes lacking a barrier between what he thinks and what he says, and possibly being the most ardent New York Knicks fan on the planet

Glenn CloseAge: 65Occupation: ActressKnown For: Being a six-time Oscar nominee for her roles in movies including ‘The Big Chill,’ ‘Fatal Attraction’ and ‘Dangerous Liaisons,’ winning three Tonys for her work on Broadway, and her current role on the TV series ‘Damages’

Bret MichaelsAge: 49Occupation: Singer, Songwriter and MusicianKnown For: Singing lead for the band Poison on songs like ‘Talk Dirty to Me,’ ‘Nothin’ but a Good Time’ and ‘Every Rose Has Its Thorn,’ winning ‘Celebrity Apprentice 3,’ several well-publicized health problems, and starring on the ‘Rock of Love’ reality franchise, in which women who reek of beer and desperation try to win his affections

William H. MacyAge: 62Occupation: ActorKnown For: Winning an Academy Award for his role as Jerry Lundegaard in ‘Fargo,’ roles in other movies including ‘Boogie Nights,’ ‘Magnolia’ and ‘Seabiscuit,’ his current role on the Showtime series ‘Shameless,’ and his long marriage to actress Felicity Huffman

Rob ReinerAge: 65Occupation: Actor, Director, Writer and ProducerKnown For: Earning two Emmys playing Michael “Meathead” Stivic on ‘All in the Family’ before going on to a successful directing career helming films like ‘Stand by Me,’ ‘When Harry Met Sally…,’ ‘Misery’ and ‘A Few Good Men,’ his political activism, and a former marriage to fellow actor-director Penny Marshall

Bernadette PetersAge: 65Occupation: Actress, Singer and AuthorKnown For: Being one of the most critically acclaimed Broadway performers in history, appearing in the films ‘Silent Movie,’ ‘The Jerk,’ ‘Pennies from Heaven’ and ‘Annie,’ having a voice like buttah, and her mass of trademark red curls

Aziz AnsariAge: 29Occupation: Actor, Writer and ComedianKnown For: Starring in the NBC sitcom ‘Parks and Recreation,’ appearing in movies including ‘Get Him to the Greek,’ ‘Funny People’ and ’30 Minutes or Less,’ and hosting the 2010 MTV Movie Awards

Kelsey GrammerAge: 57Occupation: ActorKnown For: His two-decade portrayal of psychiatrist Dr. Frasier Crane on the hit sitcoms ‘Cheers’ and ‘Frasier,’ providing the voice for characters like Sideshow Bob on ‘The Simpsons,’ currently starring in the Starz series ‘Boss,’ and a tabloid-friendly personal life that’s included four marriages

Christie BrinkleyAge: 58Occupation: Model and ActressKnown For: Her three consecutive appearances on the cover of the Sports Illustrated Swimsuit Issue in the late 1970s and early 1980s, her long endorsement contract with CoverGirl, inspiring the hit ‘Uptown Girl’ during her marriage to Billy Joel, and a messy and very public divorce from her most recent husband

Portia de RossiAge: 39Occupation: ActressKnown For: Her roles as lawyer Nelle Porter on ‘Ally McBeal’ and Lindsay Bluth Fünke on the cult-favorite sitcom ‘Arrested Development,’ appearing in other shows like ‘Better Off Ted’ and ‘Nip/Tuck,’ and her marriage to comedian and talk show host Ellen DeGeneres